生せい物ぶつ化か学がく的てき酸さん素そ要よう求きゅう量りょう

noun

biochemical oxygen demand; BOD

Technical term used in environmental science and water quality assessment. Often abbreviated as BOD in English contexts.

• 河か川せんの水すい質しつを評ひょう価かするために生せい物ぶつ化か学がく的てき酸さん素そ要よう求きゅう量りょうを測そく定ていした。

  We measured the biochemical oxygen demand to assess the river water quality.